diff --git a/DESCRIPTION b/DESCRIPTION
index 538de38..4d10f13 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: rgee2
 Title: Extra functions for R Google Earth Engine
-Version: 0.1.1
+Version: 0.1.2
 Authors@R: 
     person(given = "Dongdondg",
            family = "Kong",
diff --git a/R/ee_buffer.R b/R/ee_buffer.R
index 1144d0b..0dc2daa 100644
--- a/R/ee_buffer.R
+++ b/R/ee_buffer.R
@@ -4,21 +4,23 @@
 #' @param scale in the unit of `m`
 #' @param half_win half window of the buffer (in grids). window size equals to
 #' `2*halfwin + 1`.
-#' 
+#'
 #' @examples
 #' \dontrun{
 #' st <- st_212[, .(site, lon, lat, IGBP)]
 #' st_point_buffer_3by3(st, 500)
 #' }
 #' @export
-st_point_buffer <- function(st, scale = 500, half_win = 1, cellsize = NULL) {
+st_point_buffer <- function(
+    st, scale = 463.3127,
+    half_win = 1, cellsize = NULL) {
   if (is.null(cellsize)) {
-    cellsize <- scale / 500 * 1 / 240
+    cellsize <- scale / 463.3127 * 1 / 240
   }
 
   win <- half_win * 2 + 1
-  lon <- seq(-half_win:half_win) * cellsize
-  lat <- seq(-half_win:half_win) * cellsize
+  lon <- c(-half_win:half_win) * cellsize
+  lat <- c(-half_win:half_win) * cellsize
   adj_mat <- expand.grid(lon = lon, lat = lat)
 
   grps <- 1:nrow(adj_mat) %>% set_names(., .)
@@ -37,7 +39,7 @@ st_point_buffer <- function(st, scale = 500, half_win = 1, cellsize = NULL) {
 #' df2sf
 #' @example R/examples/ex-df2sf.R
 #' @keywords internal
-#' @export 
+#' @export
 df2sf <- function(d, coords = c("lon", "lat"), crs = 4326) {
   sf::st_as_sf(d, coords = coords, crs = crs)
 }
diff --git a/man/st_point_buffer.Rd b/man/st_point_buffer.Rd
index 29ebe9d..be0303c 100644
--- a/man/st_point_buffer.Rd
+++ b/man/st_point_buffer.Rd
@@ -4,7 +4,7 @@
 \alias{st_point_buffer}
 \title{ee_point_buffer}
 \usage{
-st_point_buffer(st, scale = 500, half_win = 1, cellsize = NULL)
+st_point_buffer(st, scale = 463.3127, half_win = 1, cellsize = NULL)
 }
 \arguments{
 \item{st}{A data.frame with the columns at least of \code{site}, \code{lon}, and \code{lat}.}
diff --git a/scripts/BEPS/ee_extract_02_st212_MODIS.qmd b/scripts/BEPS/ee_extract_02_st212_MODIS.Rmd
similarity index 87%
rename from scripts/BEPS/ee_extract_02_st212_MODIS.qmd
rename to scripts/BEPS/ee_extract_02_st212_MODIS.Rmd
index 163fec8..b70f0ca 100644
--- a/scripts/BEPS/ee_extract_02_st212_MODIS.qmd
+++ b/scripts/BEPS/ee_extract_02_st212_MODIS.Rmd
@@ -7,7 +7,8 @@ library(rfluxnet)
 library(sf)
 library(sf2)
 library(Ipaper)
-ee_Initialize(drive = TRUE)
+# ee_Initialize(drive = TRUE)
+ee_init()
 ```
 
 ```{r}
@@ -21,10 +22,18 @@ proj = ee_get_proj(imgcol)
 scale = proj$scale # scale should lte prj.scale
 # scale = 463.3127
 
+col = ee$ImageCollection("MODIS/061/MOD15A2H")$select(c("Lai_500m"))
 # sp_2 = st_point_buffer(st, scale = scale, half_win = 1) # -half_win: half_win
 # sp_5 = st_point_buffer(st, scale = scale, half_win = 2)
 ```
 
+```{r}
+# col <- ee$ImageCollection("MODIS/061/MCD12Q1")$select(0)
+system.time({
+  df = ee_extract(col, sp, via = "getInfo", lazy = FALSE, scale = 450)
+})
+```
+
 ```{r}
 # col <- ee$ImageCollection("MODIS/061/MCD12Q1")$select(0)
 # df = ee_extract(col, sp, via = "getInfo", lazy = FALSE, scale = 500)
diff --git a/scripts/Extractor/ee_extract_04_PMLV2_China_forcing.R b/scripts/Extractor/ee_extract_04_PMLV2_China_forcing.R
index 07f54a0..ea215e1 100644
--- a/scripts/Extractor/ee_extract_04_PMLV2_China_forcing.R
+++ b/scripts/Extractor/ee_extract_04_PMLV2_China_forcing.R
@@ -1,18 +1,19 @@
 library(rgee)
 library(sf)
 library(dplyr)
-
-
+library(tidymet)
+library(sf2)
 
 devtools::load_all()
 # ee_Initialize(user = "kongdd.sysu", drive = TRUE)
-ee_Initialize(user = "cuijian426", drive = TRUE)
+# ee_Initialize(user = "cuijian426", drive = TRUE)
 # ee_Initialize(user = "kjding93", drive = TRUE)
-# ee_Initialize(drive = TRUE)
+ee_Initialize(drive = TRUE)
 
 ## 1. read tested points
-sp <- read_sf(path.mnt("C:/Users/kongdd/Desktop/学生研究/谢宇轩研究-planB/st_met2481.shp")) %>%
-    dplyr::select(site)
+sp = st_met2481 |> df2sp() |> select(site)
+# sp <- read_sf(path.mnt("C:/Users/kongdd/Desktop/学生研究/谢宇轩研究-planB/st_met2481.shp")) %>%
+#     dplyr::select(site)
 # sp %<>% mutate(ID = 1:nrow(.)) %>% select(ID, IGBPcode)
 
 ## 2. clip ERA5L data by `rgee`